francisco. >> reporter: today police revealed new details about wayne jackson. police say he fits the physical description of the man collins was last seen talking to. >> he lived not far from where the abduction happened. he had a dog similar to the dog that the suspect was seen to have. >> reporter: at the time, eyewitnesses and a consense search of jackson's house failed to conclusively tie him to the case. jackson had five different identities, and a history of kidnapping, lewd acts, and sexual assaults against boys in canada, and one at fisherman's wharf in the years before collins disappeared. cold case investigators said they developed new leads, prompting a search of jackson's old house. that turned up to be animal bones. >> what he we're looking for is anybody that saw this guy back in 1984, anybody that talked to this guy back in 1984. >> reporter: police say they talked to jackson's roommate. ktvu channel 2 news. >>> ktvu sat down this morning with collins mother. >> when we heard his background, i just got chills. >> ann collins says she didn't recognize wayne jackson.